单项选择题

The company has employed a girl who is （）at operating the computer.

A. sufficient
B. proficient
C. efficient
D. inefficient

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单项选择题
In the coming term she will （）the advanced class.

A. take advantage of
B. take account of
C. take charge of
D. take care of
单项选择题
（）him tomorrow

A. Why not to call on
B. Why don’t call on
C. Why not to calling on
D. Why not call on
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